Which item is not typically included in a dive log?

• A. Dive plan, start/end times, depths, gas usage, hazards, and any incidents.
• B. The date of the dive.
• C. Weather forecast for the day.
• D. The vessel's logbook number.

Answer: (D)

Documenting a dive focuses on what happened during that specific dive and the resources used, so the log should record the date, the planned dive and the actual start and end times, depths reached, gas usage, any hazards encountered, and any incidents. These details help with safety, training, and future planning by showing how the dive unfolded and what was consumed or encountered. The vessel’s logbook number, however, is tied to the boat’s overall operations and administrative records, not to a particular dive. It belongs in the vessel’s own paperwork, not in the dive log. Weather forecasts might be consulted for planning, but they are not typically an entry in the dive log itself, which concentrates on actual dive details rather than forecast information.